 Type one error finding something that isn't there. It's a bit of an existential issue It's a it's an error. It's the type one error. It's a false positive finding something that isn't there This is if I tell you you have chlamydia, but you really don't I'm delusional. Yeah. Well, that's probably not a type one error He's accurate. Yeah, so if you're delusional if somebody finds you delusional, but you're really not right It has to do with measurement error all sorts of things that create a type one error Your measurement errors are really common one actually But it can be a good thing think about it in terms of oh, I don't know the medical setting This is a screening test making sure that I am oversensitive to whatever it is. I'm testing for right Because if I find it and it's not there at least the person is safe Okay, and we're trying to treat something right or we're looking further to see if it really is there So type one error false positive finding something that is not there